====== Privat ======

===== Rotate video =====
<code>
ffmpeg -i input.mpf -vf "transpose=1" output.mp4
</code>


For the transpose parameter you can pass:

  * 0 = 90CounterCLockwise and Vertical Flip (default)
  * 1 = 90Clockwise
  * 2 = 90CounterClockwise
  * 3 = 90Clockwise and Vertical Flip


===== Normalize audio file =====

To get volume level of the media file in command line I use:

**LINUX**
<code>
ffmpeg -i audo.mp3 -af "volumedetect" -f null /dev/null
</code>

**WINDOWS**
<code>
ffmpeg -i audo.mp3 -af "volumedetect" -f null NUL
</code>


To normalize
<code>
ffmpeg -i input.mp3 -af "volume=5dB" output.mp3
</code>



Normalize inside a video file

<code>
ffmpeg -i video.avi -af "volume=5dB" -c:v copy -c:a libmp3lame -q:a 2 output.avi
</code>